Padlock



July 26, 1949. M. A. YAKUEHK 2,477,325

. INVENTOR MICHAEL A. YAKUBIK BY M4K/ww ATTORNEYS M. A.V YAKUBIK July 26, 19.49.

PADLOCK Filed May 3l, 1946 2 Sheets-Sheet 2 INVENTOR v MICHAEL A. YAKuBm BY v /Q 0am @/m ATTORNEYS levers toward each other to release the shackle. To prevent this, a. locking plate 24 is normally held by a spring in the position shownin Fig. 6 where the ends of the locking plate abut the flanges Ib and I9b to prevent retraction of the locking lever noses out of the shackle recesses. This locking plate is mounted von a pivot shaft 26, the endso'f which?` are held inthe case. best seen in Fig. 4, thev side portions of the locking plate are bent upwardly as shown at 24a,` to` pass over the top of shaft 26, and the mid por: tion of the plate is bent downwardly as shown at 24U. to pass beneath thebettemef theshaft 26. The spring 25 has oneperi'd lieldafgainstga stop 21 on the case and is theniloopdonce or twice around shaft 26, as best seen in Fig. 4,

and the opposite end oi the sprir'igres'tsagainst'l the right-hand end of the locking plate, as clearly seen in Figs. 1 and 5. This normally urges'the locking plate in a clockwise direction, as viewed in Figs. l1, 5' and 46,- and this'motionis limitedl by the shoulder 28 on the locking lever I9.

Themeans provided for moving plate 24 out of its lockingposition comprises a vibrator 29 which is pivotally mounted by means of pivot 30 on the upper end of lever I8. `The construction of pivot 36 is bestseen in Fig. 2. This comprises a pin V3mi riveted to the vibrator 29; This pin enters a cup-shape vbearing 3I which is riveted to lever I8. AA iiat spring 32ris-r`ivetedto the case by rivet 33. This spring'presses against the vibrator 29 and holds itl in the position shown in the various views. On the end of the vibrator opposite the pivot'30 is mounted a tapered pin 34, the inner end of which is adapted to coact with aV` permutation lock whereby the 'vibrator is manipulateol.-v Y n I. The permutation-lock here described kis simi lar to thatY shown in Patent Number 2,308,892, granted January 19, 1943, to Edward M. Miller, but obviously, other types ofcombination locks might be used `for the control of vibrator 29. The type here shown comprises a disc'35 which is an integral part of a shaft 36 which extends through the front wall of the case Vand is `provided with a-knob 31 for manipulation'oflthe lock.v On "the disc 3-5 are various cams, as shown at a,.35b, 35e, and 35d; .This is a known form of permutation lock forV working' the pin34 gradually from the center of disc 35 outwardly to the final unlocking position shown in Fig. -1. Referring to Fig. 6; in one type of manipulation the pin 34 is carried outwardly tothe pointed end of cam 35a by rotation of disc 35 in a clockwise direction. Then, upon counterclockwiserotation of disc 35, the pin 34 remains in xed position relative to'disc 35 because'of 'spring32, until cam 35h lengagespin 34 in the position shown in Fig. 6 and, as disc 35 rotates ina counterclockwise direction the cam 35h works pin' 34 radiali;7` outwardly. Vlhen pin 34 `has been -moved out 'as far as possible by cam 35D-, disc 35 is again :shackle I 3 `causing? the:` cam surfaces? of recesses .ing lever I8. I"that as shackle I3 is moved from the position of Fig. 1 to that of Fig. 5, the recess surface 2| first cams the nose 8a out of the way, and then engages thenose'29h of the Vibrator causing v1'5"abo'ut'pivot 30 vfrom the position of Fig. 1 to 2| and 22 to move the lever noses I'8a and Ia respectively, inwardly to the position shown in Fig. 5, releasing the shackle. I

Means is provided for autcmatically resetting the lock when the shackle is pulled to its outward position, as shown in Fig. 5. Referring for a moment to Fig. 1, it wi11 be Anoted that the vibrator ,29, has 'afianged end L292? which extends farther to the' left than'th'e Vnose Ia of the lock- It results from this construction a'V counterclockwise movement of the vibrator that of` Fig. 5.,. This automatically throws the pin 34 back into the mazes of the permutation `lock =so that when theshackle is again moved inwardly from the position of Fig. 5 to that of -Figf 1, itfis automatically locked'- in that position,

as first described. y Y

The'disc 35 is provided with the usual notches 38 .in'whichengages a -spring 39 Yheld by mem- 'ber 4I) on the case I9 so that as knob 3l is `ma- As shownin Figs.l 7 and 8, there maybe pro'- Vvided a stop ring 4l intermediate between knob 3`If-an'd shaft 36 'for ythe purpose' of providing more turns of the knob in working the combination` as is fully described and claimed in th'e copending application of Edward M. Miller, Serial t -Number 666,661, filed 'May 2, 1946, which-'is now Patent Number 2,441,895, granted May 18,` 1948,

to which reference' may be had for an understanding of this"A modication. The `present lock mayuse this Miller invention or not, as desired. What I`claim is:

1. In a padlock, a case,'a U-shape shacklelha'vling two legs "adaptedto enter said case, two locking levers pivotally mounted in said case, there .being recesses, one in `each of 'said shackle legs vfor receiving its associated locking lever, a locking plate supportedin said case, means normally urging V,said plateto lockingl position relative to said levers and vpreventing removal ofthe flatter from said recesses, a vibrator movable to a posi- .tion for holding said plate in unlocking position *.topermit removalvof said levers from said recesses, and `a Apermutation lock in said case for controlling said vibrator.

2. In a padlock, a case, a U-shape shackle having two legs adapted to enter said case, there mounted in' said caseand having locking ends in position toengage said recessesV when-*said shacklelegs -enter saidV case,'said locking ends beingmovabletoward and away from each other 'by' lever oscillation, a' locking plate movably supported in "said vcase between ,said locking ends, means normally urgingsaid plate tolocking position between said locking ends where it prevents removal 'of Vthe latter-fromsaid recesses, a vibrator movable to" a 'positionfor-'holding' said plate in i unlocking position to-permit removal o f said lever locking ends from said recesses, and a Vpermutation lock in said case lfor controlling said vibrator.

3. The combination of claim l including means operable by movement of said shackle away from said case for moving said vibrator out of plateholding position.

4. The combination of claim 2 wherein said vibrator is pivotally mounted on one of said locking levers and a portion of said vibrator, when the latter is in said position holding said plate in unlockingv position, is so located that movement of said shackle away from said case operatively engages said vibrator to move said vibrator out of said plate-holding position.

5. In a padlock, a case, a U-shape shackle having two legs adapted to enter said case, two locking levers pivotally mounted in said case, there being recesses, one in each of said shackle legs for receiving its associated locking lever, a locking plate supported in said case, means normally urging said plate to locking position relative to said levers and preventing removal of the latter from said recesses, a vibrator movable to a position for holding said plate in unlocking position to permit removal of said levers from said recesses, said vibrator being provided with a pivotal fmounting intermediate its ends, a permutation lock in said case engaging one end of said vibrator and adapted -to move said vibrator to said plateholding position by operation of said lock, the

other end of said vibrator, when said vibrator is being recesses provided, one in each of said shackle legs, said recesses being positioned opposite each other, two locking levers pvotally mounted in said case and having locking ends in position to engage said recesses when said shackle legs enter said case, said locking ends being movable toward and away from each other by lever oscillation, a locking plate movably supported in said case between said locking ends, means normally urging said plate to locking position between said locking ends where it prevents removal of the latter from said recesses, a vibrator having a pivotal mounting intermediate its ends on one of said locking levers adjacent the locking end thereof, one end of said vibrator being movable to a first position for holding said plate in unlocking position to permit removal of said lever locking ends `from said recesses, the other end of said vibrator in said rst position extending into one of said recesses whereby said vibrator is Oscillatable by movement of said shackle away from said case to move said vibrator out of said first position, and a permutation lock in said case for controlling said vibrator.

7. The combination of claim 2 wherein stop means is provided on one of said locking levers for preventing movement of said locking plate beyond locking position under inuence of said urging means.

MICHAEL A. YAKUBIK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 416,268 Kubler ,v Dec. 3, 1889 863,868 Miller Aug. 20, 1907 1,155,405 DAngelo Oct. 5, 1915 1,508,139 Full Sept. 9, 1924 1,883,072 Stone Oct. 18, 1932 

